ACT Streetlite XACT Steel Flywheel (600235) | Subaru STI 2004-2021

The ACT Streetlite XACT Steel Flywheel (600235) is engineered for 2004–2021 Subaru STI owners seeking a high-performance, lightweight steel flywheel that balances durability with quick throttle response. This Streetlite flywheel reduces rotational mass, improving engine acceleration, rev matching, and clutch engagement ideal for spirited street driving, autocross, or occasional track use while maintaining long-term reliability.

KEY FEATURES

• High-strength steel construction for durability while reducing rotational mass
• Streetlite design optimized for fast engine response, improved rev matching, and smooth clutch engagement
• Direct-fit replacement compatible with factory crankshaft and clutch components
• Improves throttle response, engine spool, and overall drivability for street and light track use
• Compatible with both stock and performance clutch systems for STI applications
• Professional-grade construction ensures consistent performance over repeated load cycles

TECHNICAL SPECIFICATIONS

• Platform Compatibility: Subaru STI 2004–2021
• Flywheel Type: Streetlite XACT Steel Flywheel
• Material: High-strength steel for durability and optimized rotational mass
• Torque Capacity: Supports up to 550 lb-ft (verified for Streetlite XACT STI applications)
• Horsepower Support: Up to 600 HP (verified for Streetlite XACT STI applications)
• Installation: Direct-fit replacement using OEM crankshaft and clutch bolt patterns
• Performance Benefit: Reduced rotational mass, faster rev transitions, improved throttle response, and enhanced engine feel

VEHICLE FITMENT

• Subaru STI 2004–2021

ACT delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.